The Trump administration’s announcement that it will revisit parts of the Phase 2 greenhouse gas/fuel economy rules were greeted with cautious optimism by the trailer makers who pushed for the review, but with concern by other parties.

Just months before new greenhouse gas and fuel efficiency rules affecting trailers and glider kits are scheduled to start taking effect, the U.S. Environmental Protection Agency says it plans to revisit those rules.

Looks like SmartWay’s days are numbered, if not those of the entire Environmental Protection Agency, but we shouldn't be especially sad if EPA budget cuts kill SmartWay. We have options, writes Rolf Lockwood, Executive Contributing Editor.

In his Passing Zone blog, HDT's David Cullen weighs in on an Environmental Protection Agency proposal to eliminate the agency's voluntary fuel-saving SmartWay program as part of budget cuts under the Trump administration.

The U.S. EPA has accused Fiat Chrysler of failing to disclose engine management software that increased air pollution in 104,000 diesel-powered Ram 1500 trucks and Jeep Grand Cherokee SUVs in the 2014 to 2016 model years.

The U.S. Environmental Protection Agency has announced that it will begin work on a new proposed rule aimed at setting lower standards for NOx diesel emissions from heavy-duty diesel engines beginning in model year 2024.

The U.S. Environmental Protection Agency has approved a 6% increase in the level of biofuels that producers must blend with gasoline and diesel in 2017 that falls significantly short of amount required by the Renewable Fuel Standard by 2022.

The Environmental Protection Agency and the National Highway Traffic Safety Administration have officially published the Phase 2 greenhouse gas/ fuel efficiency rule for commercial vehicles in the Federal Register.

Agencies contend the program will provide $230 billion in net benefits to society, including benefits to our climate and the public health of Americans but the trucking industry must still deal with those costs, as well as ones the agencies might not have taken into account.